Note 1 - Summary of Significant Accounting Policies - Basic and Diluted Earnings Per Common Share (Details) - USD ($)	12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018
Numerator for basic and diluted net income (loss) per share:
Net (loss) from continuing operations	$ (1,419,586)	$ (3,336,049)
Net (loss) from discontinued operations		(50,853)
Net income (loss)	$ (1,419,586)	$ (3,386,902)
Denominator:
For basic net income (loss) per share - weighted average common shares outstanding (in shares)	4,277,375	4,202,836
Effect of dilutive stock options (in shares)
For diluted net income (loss) per share - weighted average common shares outstanding (in shares)	4,277,375	4,202,836
Net Income (Loss) per share - Basic:
Continuing Operations (in dollars per share)	$ (0.33)	$ (0.80)
Discontinued Operations (in dollars per share)		(0.01)
Net Income (Loss) per share (in dollars per share)	(0.33)	(0.81)
Net Income (Loss) per share - Diluted:
Continuing Operations (in dollars per share)	(0.33)	(0.80)
Discontinued Operations (in dollars per share)		(0.01)
Net Income (Loss) per share (in dollars per share)	$ (0.33)	$ (0.81)